If you play a combo for PK strength with the intention of learning to PK, you will probably learn for as long as you're actively interested in the character. With RP evidently being what you truly enjoy, I fear for how long such a character would last. Now, I'm not suggesting a character created primarily for PK would be shallow cannot enjoy great roleplay, I'm just using one end of the spectrum of an example.
If on the other hand, you say "To hell with you FL forum!" and play what you want, and roleplay the hell out of your character, you're really going to enjoy yourself, create in-game friends and a connection to your character you won't want to lose - all the while, people are STILL going to try and kill you and you will make enemies, so you're honing your PK ability too.
I hate to make this distinction from PK and RP but sometimes you have to think about them seperately in order to think about improvement in one of them.
I don't know anything about Liadon as I've only just recently returned but it sounds as though you've made a very positive impression on many other in-game personas with him/her. Why the hell would you want to throw in that towel? 
Dey