If Mike stumbles into the guard...
I follow his play. Mike will probably be concentrating on the gun. I'll concentrate on getting my legs tangled with his and taking him to the ground. Gunplay while wrestling is very hard to manage period. If Mike can't get that close, we should both just stay ready waiting for him to be distracted.
If we get into HTH, I can't really do much damage (I'm not HTH expert). But it shouldn't be too hard to overbear, as this should be easier than throwing good punches or securing locks, etc.
I do, however, have combat boots on. Given the chance, I can try to break some ribs.
However, if this looks like a plan to get us all killed, we should both hold until we get a good chance....