Guitar technique question - picking / trills

fobster

I have this little technique I play, just wondering if it's a common enough thing in licks, soloing etc. I pick the G-string at the 9th fret once and then pull-off to the 7th interspersing the next hammer-on with picking the B-string on the 8th fret. The tricky part is doing the pull-off without hitting the B-string and leaving the index finger anchord on the 7th fret is needed as well.

B --------8----8----8----8----8----8

G -----9p7-h9p7-h9p7-h9p7-h9p7-h9p7-7

Opinions? Excuse the formatting, I think it lines up ok.

-=al=-

looks fine really, just need to arc your ring finger more to avoid hitting the b string