I believe the ScubaPro Air2 and the SeaQuest Air Source both use hose fittings that are different from a standard LP inflator hose. I have an Air Source, and I am not able to use a standard LP hose with it. My LDS, a ScubaPro dealer, told me the Air2 did not use a standard hose fitting either. This would be consistent with what I have seen with dive alert. They come in three models... standard, Air2, and Air Source. The only reason they would need three models is if the LP inflator hose fittings were different.
The AirII should work on any BC from any manufacturer with a standard inflator/dump valve on the left shoulder. Just be sure to get the AirII hose with the AirII. From my experience, carrying along a spare hose, or even better, your old inflaor & hose with a backup octopus, may save a day of diving if you ever have trouble with it.