I've used MURS since the day the FCC announced MURS.
YES - You must use 2 watts or less
YES - It is supposed to be an approved FCC radio for MURS
THE REALITY - From observation, I don't think the FCC cares much about what happens on MURS or any of the other low power business frequencies provided that no one causes interference to a licensed user. With the cheap Chinese radios flooding the market, Its an anything goes situation out there. Those 5 frequencies don't ever get used in some areas like where I live (minus Walmart and some schools) and some areas, guys are cranking 50 watts. Way back in the day, a bunch of guys I knew all used MURS at higher than the recommended power. We all stayed very professional using number identifiers between us, keeping the language clean, using channels that were not in use by other local entities, and always giving priority to those who needed the frequency. The FCC never said a thing. Many years later, someone had used MURS to call in a gun threat to a local Walmart and it caused a multi-agency response. The charge on the person was criminal mischief and breach of peace and again, NO FCC involvement. I've heard many other horrific stories over the years. It seems, MURS is the CB radio of the VHF band. Think about CB. Its supposed to be *cough* 4 watts AM. I'm pretty sure, besides myself, no one *cough* uses 4 watts.
In my opinion, MURS should just be used responsibly. I mean, Ham radio is dead in most areas when it comes to Emergency communications, so why not get a bunch of citizens together and make use of it. No license required. Just sayin.