I'm using my Kenwood NEXEDGE portables (NX-300) on GMRS in analog, also on a few UHF business freqs I'm an authorized user on a friend's system in NXDN digital, and on the 440 ham band in analog and NXDN digital modes.
One good thing about Kenwood's new UHF line of NEXEDGE radios are that they specifically have FCC Part 95 Type Acceptance in addition to Part 90 type acceptance, making them squeaky-clean and legal radios to use on GMRS. Kenwood has been very good about including Part 95 type acceptance on their UHF radios. Even Kenwood's UHF NEXEDGE repeater (NXR-800) has Part 95 in addition to Part 90. Too bad digital operation isn't legal on GMRS otherwise I'd be using it there.
Be forwarned that not all Part 90 commercial gear has officially has Part 95 type acceptance even though the equipment more than meets all technical requirements for Part 95. The reasons for this can be as simple as the radio manufacturer didn't bother to check the Part 95 box on the application form (FCC Form 731) when they applied for Part 90 Type Acceptance. It is likely tied to the radio manufacturer's marketing strategy for their radios.
A Part 90 radio that doesn't specifically have Part 95 type acceptance (Moto HT1250 for example) technically isn't legal to use on GMRS. Provided GMRS users are licensed and behave themselves and don't cause harmful interference with their Part 90 gear, it's unlikely that the Part 90 w/o Part 95 type acceptance situation would ever become an issue.