Psyker powers X-over?

By Maxim C. Gatling, in Rogue Trader House Rules

My powers of "Forum Search" are failing me. Seems there was a thread about crossing over DH Psyker powers and RT Psyker powers so you didn't have two different systems banging heads together.

If you know what thread I'm talking about, could you link it? OR, if you have a good system for doing just this, could you post it either here or in House Rules?