I'm sorta stuck with 1 tweeter for this project. It is designed for use in home , but may occasionally get a trip to a gig, not sure on that one. I do understand the difference in drop off, but unfortunately don't have access to multiple cheap small tweeters.The off axis response of the Peerless is a tad of a concern, but I really am not sure what I can do about it. The roll off above 15k probably matches my ears 
I may see if I can hunt down a different tweeter, but it needs to be around 94dB sensitivity at least for its job.
Oh well, if it doesn't work, I can always buy a few woofs and gradually use up the P11's some other way , maybe in a W/mtm HT system !!!
Thanks for your help !!! 