inflatables do have their place
I have a pair of the Sospenders inflatable PFD's and insist on non-swimmers wearing them at all times when aboard. I also wear one anytime I'm singlehanding. (promised my Mom!)I've never had any problem with premature inflation, even in some fairly wet weather. If things start getting really heavy, I trade the inflatable for a type 1, as there is nothing that can go wrong with them. But, they are bulky and uncomfortable to wear for extended periods. IMHO, it's far better to have on an inflatable than nothing at all, and it's a lot easier to get someone to put on an inflatable than any type of PFD, so they do serve a purpose.