No. This is tribal nonsense if you ask me. I have dealt with it personally, but I generally play whatever bass I want to play. However I will make an exception as long as you make it worth my while


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I assume the comment means it looks like your playing double bass, but your not. First of all, an EUB does not generally look like a double bass.
How much various EUBs sound and play like a double bass varies quite a bit. IME the most authentic double bass emulation is achieved with a high-end Yamaha Silent Bass. IME the Silent Bass does not emulate a nice carved double bass. I would say it's more on par with a decent laminate double bass.
The EUB I chose is at the opposite end of the spectrum. It sounds more like a fretless bass guitar. I also has 6 strings and a concave channel that runs down the back of the neck. I find that my double bass fingering translates directly, but due to the unusual neck profile, it engages different muscles in my left hand.
I used to do big band concerts where I switched between double bass, 6-string EUB, and 6-string fretted bass guitar. I was free to chose whichever instrument I thought best suited the arrangement. I used the EUB for more modern works.
For concert band, where I played in a classical style, I found that playing the EUB messed up my intonation on the double bass. So a few days before tour prep, the EUB went in its case and I pulled out Simandl to calibrate my hand to the double bass.
Never a problem to switching between double bass and fretted bass guitar.