No apology needed, I hate when people do it too.
Let me ask you...
How is it using flats from different makers on your bass?
Always thought that was a bad idea but yet i think it would be quite wise.
Go over to the double bass side of the forum and you will see that mix-and-match stringing to bring out the different tonal aspects of a double bass is common.
Now, the main reason for not mixing strings on an electric bass is consistency of tone and tension. So traditionally, when a string died or broke, a string of the same make, model and gauge was used to replace it reflexively, if not the entire set. Once entire sets became inexpensive, then the whole set would be replaced instead.
But with flats, the strings can last so long, and the average price for a set of flats is more than for a set of rounds, that it is sometimes more cost effective to replace a single string. Again, one might think that to just get a new one of the same make, model and gauge would work, but it might be too bright going in, as in the case of Chromes which have a definite change of character over time, and so something like a GHS Precision, which is darker to start with, might be a better choice when replacing only one string on a set of well-seated Chromes.
In my example, Fender does not sell single flat bass strings, so through experimentation, for my custom half fanned P/J, the Ernie Ball had the closest match tonally.
And many basses, because of the inherent design flaw of G string saddles, with the string not having as much "break angle" over the saddle, can twang. So again, a darker string, like a GHS Precision Flat, as opposed to a matching string, might be a better choice.
The double bass side of the forum has many threads about what to use to eliminate twang for a G string to coordinate with a set of Spirocores, especially Weichs.
My double bass is rather middy and growly, being an inexpensive plywood bass, but light in the lowest bass response, so I have a Spirocore 3885.5W E string to get all the projection I can, a Bel Canto A & D string for a nice round tone, and a D'Addario Prelude G string, which is surprisingly dark, so there is no twang on the top end.
There is another aspect I have found more noticable for flats: coordination of the tone of the string with the inherent resonance of the body. On my alder bodied custom, the Fender flats are perfect: big, bold, growly, can mellow out, consistent, etc., as set forth in my first post. But my Ibby SRA305 has an agathis body, which has more of a midrange resonance, and the Fender strings do not coordinate well, as the midrange characteristics of each are not compatable. So on the Ibby I have Chromes, because they have less midrange and more top, which will round out over time, and coordinate well.
The upper mid/lower treble characteristic of Labellas when new was also not quite compatable with the Ibby body, either, but sound great on the P/J; I just prefer the Fender tone instead.
Another issue of string choice can be personal to the player. I can't use T-I's, CircleK's, Optima Chromes, or D'Addario Half-Rounds, because the pure nickel wrap, or high nickel content in the case of hte CircleK's, interacts with my hand perspiration and corrodes, leaving me with black fingertips and premature string death. The Chromes, Fenders, Ernie Balls, and GHS Precision Flats are all wrapped with various steel alloy ribbon wrap, which does not interact with my hands.
And when I use round wound strings, for the same reason, I use stainless steel wrap strings, like Rotosound Swingbass or GHS Super Steels, instead of nickel plate rounds, like D'Addario XL's or GHS Boomers, for the same reason.
My string choices have now been explaned, probably too much so. But there they are.
In one of the OP's prior posts, the request for more explanation was requested. I hope this hasn't gone to the other extreme with TMI.