Definitely worth experimenting. Loads of stuff on it that I haven't played around with yet, but some things seem to have been overlooked (like the ability to use the internal speakers when hooked up).
If it was 500w I'd be laughing. With a DI.
I really like the tone at low volume. But if it was bigger then I'd compromise portability, size, weight, battery power etc.
I practise at low volume at home, and gig and busk a lot outside and it's really useful to carry around. One gig bag, one lead, one amp - get on the bus and I'm off!