seeker242
Contributor
I don't see combining 2 separate useful pieces of equipment into one useful piece of equipment as being a gimmick. To me that is just good engineering.
Sent from my galaxy S5 Active.
I personally don't like them because if you have 1 failure, you now lose 2 pieces of equipment, instead of just 1. One of which is an air source! I would prefer to have, or to need, 2 failures in order to lose 2 pieces of equipment. Consolidating failure points, so that they take out more equipment, I personally think is bad engineering from a safety standpoint.