I run HTR2CD, which per OS Giken, a tad less aggressive than TR series. As I remember it goes like this GT < STR < HTR < TR. I have it installed with Zspeed CMAK, RJM HD CMC and RJM pedal. The engagement is somehow smooth, getting small engagement window but with practice could be smooth, however, I feel sometimes it get inconsistent, it grabs very very quicker than usual and I would back off to get out smoothly, I am lazy to go check if everything is aligned perfectly
I would try to change pedal engagement point and other stuff but don't have time as well as it is not my daily and shifting with SRM is great.