I don't have one yet, but after reading and seeing pretty uniformly good reviews, I ordered one of the first batch of the TI version when they dropped a few weeks ago. I probably won't get it for at least a month given the pre-order timeframe, but I'll be putting it in the rotation on a couple of my main 6mm ARC gas guns, and maybe my 12.5" 5.56. I've shifted to using my CAT Noah TI on these rifles and am totally sold on lower backpressure hybrid cans over the baffle type cans I used to use, if he Rhodie is on par with the Noah, I'll be very pleased.
I did read that Ridgeback is going to be bringing out a Ti version of the 4.5" Rhodie 6k as well, probably sometime in June. The 6k has a reputation for being almost as quiet as the 6, but slightly higher backpressure. If I like the longer 5.5" Rhodie 6 TI, I might pick up one of these 6k Ti's as well, keep the 6 on my 13" ARC, and the 6k on my longer 18" ARC.