You ever try bailing out of a vehicle with a full length carbine and engage targets quickly? Bullpups work well for what they are intended for. :cheers:
The only advantage that bullpups have is a full size barrel in a compact rifle, compared to same overall sized rifles.
If they are intended for bailing out of a car and engaging targets, then they will be used in short ranges, hence no need for the long barrel.
So the only advantage is a moot point.
There is absolutely no way to have a nice trigger on one, the linkages just suck and the pulls are always long and horrible.
An SBR, to me (where legal), is always a better option, you can have a nice trigger, all the same manual of arms as the full size carbine/rifle you would/should be trained on, in a shorter package and more concealable.
DISCLAIMER: I had a PS90 and I loved it. The trigger was horrendous and it felt like a two-by-four, but it was fun. I've had way too many stupid guns to be talking about practicality, but I just don't see how a bullpup would be considered over an SBR.