I too have been interested in inflatable kayaks for while. I think the convenience of having over water mobility rolled up in my truck bed is very appealing. The inflation process is a bit of a pain but even stopping at a gas station nearest the water is a pretty good option. I read that some even have keel designs to aid tracking, multiple chambers for safety, and they all look comfortable.
You mention "beyond the surf"... do folks fish from them on the other side of the breakers down in RI? I see sea kayaker's recreationally cruising out in the open water around the cape, but most kayak anglers I see are inside bays and estuaries.
The whole inflatable concept is appealing to me. Please keep me posted on what you find out on the topic... I may be joining you this summer in an inflatable kayak purchase.