IMHO...
EHX, in general, is a GUITAR effect pedal company, as most are. Not a huge surprise to me. Having owned a Mel9 recently, I thought it sounded great on guitar, but with tracking limitations was not really a Bass thing. It is what it is. I've owned a Bass BMPi Deluxe, SuperEgo+ and Cathedral. All can do things well and not so well, to my ear, on Bass. All have moved on in fairly short order.
Currently, I own/use one EHX pedal on Bass and find it to work very well and is going to stay on the board. This is the Canyon Delay & Looper. For me, this sorta "Swiss Army Knife" is used one blade at a time, in a single size pedal slot and sounds real good on Bass.
Thanks, EHX!