I was pressured into playing through yet another utterly rubbish venue bass amp last night. It was one of those gigs where loads of bands had been on, and all the other bass players had (probably reluctantly) all used the same knackered, low end Ashdown rig. No offense to Ashdown users, they make some great kit, but this thing was an old, underpowered, thin thing. It seemed to have a compressor button that didn't actually switch the compressor off, and seemed to pull off the trick of being simultaneously too loud but also inaudible.
The FoH guy had pre-rigged it with his DI box, and it was a small stage. I felt like it would have made me look like a real dick to insist on using my own amp, which I could have got on and off the stage in less thsn 30 seconds. But can you imagine a situation where a guitarist would allow himself to be coerced into using some knackered old amp that happend to be on stage? There's no way on earth.
Also, if for logistical reasons of getting bands on and off quickly, you want everyone to use the same bass amp, well why not buy something so lovely and so flexible that no one could possibly mind using it. But house bass amps universally seem to be sourced from skips outside the local Cash Converters.