Yes, but not super severe SMP like say, AC. You should only use it twice for the sake of putting people back in the corner. j5C also has SMP, especially on stun proration.
It works on good proration. It's not generally optimal though over tk loops. I'm not sure if it works on everyone though. In CP Hazama is stupid enough to get it off of a 5A starter though. After 3 jCx5 loops. Gorillions of damage.
Tager onry. It is actually worth knowing how to get Hotenjin off of weaker confirms when you have less than 50 Heat, but that's another story all together.
We all know double Hotenjin is where it's at.
This doesn't seem to be working for me. The double j.C x5 is gimping the stun proration too much and 6C doesn't connect. I'll keep trying though.
Here's the actual stuff for the one I mentioned:
5C > Houtenjin > sZaneiga > CU 6C > 2C > delay > 5C > 6D.A > 4D.A > Jakou > 2C > jCx5 > slight delay > 2C > 4D.A > Jakou > 3C > Mizuchi. 7288 damage. I lied about the double 4Ds at the end. I wouldn't be surprised if the second 4D fails off of weaker starters, but that's what shitty non-optimal combos are all about!