The new SL/SL build (siphonlife/soulleech)

[Syln]

I am currently an Demo(FG)/Affliction 18/43 build but I am sick of the FG constantly getting banished so I am considering repecing to something along the lines of:
siphonlife/soulleech
http://www.wowhead.com/?talent=IqzrVRbzoZZxxbtr0thuh
I have not seen this build discussed, I even used the search feature

I just hit 70, so I really have no good gear just your basic quest rewards
My main focus is to do BGs (for the pvp gear) and some 5 man content.

My playstyle with this build would be to stay as mobile as possible in pvp, casting instants on everything within range and using immo/conflag as additional burst damage when it is an option.

I realize that the SiphonLife/SoulLeech combo will not offer as much survivability as SoulLink, but I am hoping that it will put me somewhere in a happy medium between glass cannon and SoulLink.
I also don't expect to deal damage like a full destro build, but I am hoping that this build would output more damage than the Demo/Afflic build that I am currently.

Does anyone have experience with this build style?
Do you see any improvements that could be made to this build?

~Syln~

[doogless]

Originally Posted by Syln

I realize that the SiphonLife/SoulLeech combo will not offer as much survivability as SoulLink, but I am hoping that it will put me somewhere in a happy medium between glass cannon and SoulLink.

It won't. The heal from Soul Leech is very small and extremely inconsistent. Both full Destruction (because of Shadowfury) and full Affliction (because of instant Howl of Terror) builds would have better survivability than the one you've come up with.