I think the big mistake most folks in wearables and IoT are making is in looking at them as new categories. They really aren't. We've had "wearables" that monitor bio signs for decades and we have had "wireless IoT" devices also for decades.
The major difference is the cost of the sensors and comm links has fallen off a cliff. But the development processes unique to Embedded and what essentially are Medical Monitoring devices are not new. And frankly they are very very different than the "Web 2.0/Release To Web" methodology that most folks who are "IoT experts" come from.
I would instead look for Mobile Medical Device developers and SCADA/PLC developers. Because those are folks who have actual experience in these areas