I agree with @BurningSkies about the up/down mechanics. Controllers are definitely where it's at with the FI. In the 80's band I sit in with, my Impact gets a patch from their MIDI setup and I don't have to touch it, they've got all the patch changes programmed into their show for the main bass player. Super nice. For any other gig situations, I control my FI with my HXFX... Way easier than switching patches on the FI itself.
Direct mode is nice for not having the bank restriction, but I'm not all that into the instant patch changes. (Some of my patches are used for multiple songs, so they end up not all being right next to each other.) I just leave it in Legacy mode to remain within banks and if I DO need to control the Impact directly, I just use the Up press to cycle through patches and have the necessary one ready and press the knob to change banks as necessary. That works better for me than using the double press, which I find a bit frustrating and cumbersome for my personal taste. That said, the current one press/two press method is the most logical solution with only two footswitches.
As with any opinion on Talkbass though, "your mileage may vary" for anyone reading this of course.
5sg.