Zodiacs military/commercial SIBs (FC-470 & FC-530, Heavy Duty series & Grand Raid series) are made of hypalon, but cost about double what their recreational SIBs of similar size cost.
Gemini zapcats, & other thundercat style racing boats are all PVC (which will give higher performance, but much shorter life). Gemini's Dive and Surf series can be spec'd in either PVC, 1100 denier hypalon or 1670 denier hypalon.
I believe that Avon offers both PVC and hypalon SIBs. The RNLI ones are hypalon. Humber also made/(makes?) SIBs of hypalon.
Arancia's rescue SIBs (New Zealand) are all hypalon.
Polaris's SIBs (Canada) are all hypalon (very well built, but with conventional keels