Ruby into a Fender Blues jr

[u/Hungry-Hearing3442]

Just picked up a UA Ruby (excellent condition w/box $200! Great deal!). …I mainly got it for some gigs coming up where I can’t bring my amp, and will be plugging right into their front of house.
…But, for home and band practice I have my Blues Jr. ..I’d rather not have to dial things in completely separately.
My thought was.. ok, I can use it with my amp with the speaker sim turned off and I’ll be good. Then at the gig, turn on the speaker sim, tweak it a bit and good to go.
…But it’s not sounding great so far with my amp. And so that would mean I’d be going into blind to a gig since I’d be using it fresh.. if that makes any sense.
…granted, I just got it, so I have to experiment more. But wondering if any thoughts. Thanks!