Frankly, I want to know the real reason why the FCC requires you to use a Type 95 radio for GMRS... ...Who is this rule benefiting and why?
There was a petition in 2014 to add exception to the Type 95 rules to ham operators but it failed miserably....
I had assumed the first couple of responses had adequately addressed the original post. But, that seems to not be the case. So, I will give it a try...
#1) GMRS and Amateur radio are two completely separate services with different applications, users and purposes. In particular, the US Amateur Radio service is based on International agreements:
The amateur radio service (amateur service and amateur-satellite service) is established by the International Telecommunication Union (ITU) through the Radio Regulations. National governments regulate technical and operational characteristics of transmissions and issue individual stations licenses with an identifying call sign. Prospective amateur operators are tested for their understanding of key concepts in electronics and the host government's radio regulations.
#2) As the FCC made clear in its response to the 2014 petition, allowing non-certified radios to be used in the GMRS "would allow for the proliferation of home-built, non-standardized transmitters in the GMRS, with no practicable way for the Commission to monitor and enforce regulatory compliance for these devices." Further, allowing licensed amateurs to operate non-certified equipment in the GMRS would provide special privileges for users of one service operating in another, completely unrelated, service. This would be an extremely slippery slope, one any regulatory agency would want to avoid.
#3) Amateur Radio and GMRS have their place in the world. I believe the FCC made the right decision. Blurring the boundary between the two would not result in any real benefit for anyone and might cause a lot of problems for both services.
#4) If you really want/must use ham gear on GMRS, go ahead, nobody is really going to stop you. Take responsibility for your action and operate accordingly. Just do not expect the FCC to officially condone your actions.