Anyone try Townshend Super Tweeters?

I have a speaker using modded titanium tweeters,going flat to 25 khz.Very good air and detail.However I did hear the Townshends once,used above a silk dome(the main speaker was a Sonus Faber Extrema),with incredible results.Truthfully,to me,the best high freq transducers seem to "still" be ribbons.I'm contemplating giving the Townshends a try.

Any thoughts?