You have a robust skills system and rituals. What else do you need?:4e breaks D&D players of the idea that role play outside of combat can be done with your character abilities.
You're also free to ask the DM if you can use ability X to perform action Y, which is the soul of role playing gaming as far as I'm concerned. Does every character ability need to be explicitly defined?
Houseruled?I'm glad you houseruled it otherwise, but houseruling is still fixes, and fixes implies something that needs to be mended.
I don't consider making on-the-spot rulings (for instance, regarding a nonstandard use of a power) houseruling. It's just gaming. It's suggests nothing more than you are playing a pen-and-paper role playing game (and not a CRPG).