I don't know. I don't bring them in. Better question for a shopkeeper who does keep them.
Keep in mind that shop systems are usually intended as "temporary housing", not long-term housing.
*IF* I were to bring one in, I'd be inclined to keep it in one of my 7+ foot long coral tanks, versus the FO systems, which only have maximum 75g (48") tanks. But then again I couldn't medicate if I needed to... but I do have a QT in the back... but the holding tubs are much smaller.
I daresay capture method too, may have something to do with how they fare a few weeks into captivity also.
Jenn