Hi j3brow,
I have a lot of BC and TC sort kones in my system and really works.I participate in a very good demo in my last trip to Paris this year with a dcs - Air Tight - Tannoy/Kef Blade system in AudioSynthése, official retailer of Nordost.
The results was very obvious, even my "zero audiophile" girlfriend note - without any effort - the upgrade in the sound quality with only 3 kones under the dcs player.
In that moment i had in my hands the sort füt's too, the quality was impressive and looks VERY nice but i don't have the possibility to try them.
Hope this helps
Pablo