[moved over from the
air bag thread]
I've just ordered a Scott Leathers made-to-measure two piece suit with the new inner Helite inner air bag. Expansion panels are standard.
Pie-related extra volume compensation wasn't offered.
Why?
I came to the conclusion it's better to actually buy one rather than keep putting it off. That, and Ms Cashmere forgot to put a limit on my credit card before I visited Motorcycle Live.

The inner Helite is also pretty tidy IMHO. It's the first time I've seen one.
It's electronic so you need to charge it, and electronics are more likely to go wrong compared to a strap. But I value the convenience more.
The (potentially) slightly sub-standard CRITT tests that Helite conforms to isn't quite so worrying to me, i.e. tests where you can poke a sharp object between the bladder areas, because the Helite is inside the passive protection of back and chest protectors. The passive protection is going to take the initial hit/poke/jab, not me or the Helite.
The expansion areas give me the option to swap the airbag to a different model another year if CRITT is found to be sub-standard - at a cost, obvs.
I'll let you know how I get on.