I have the Clara and also the Blackbird tenor on the way from HMS.
I too prefer the tenor scale, since my fingers are less cramped for some chords (eg, D). But the compactness of the concert scale and the durability of the Clara make it the perfect road-ready instrument. After a short period of adjustment, the concert scale is actually perfectly fine for most chords and is in fact a lot more comfortable for me for many barre chords.
That said, the moment a Blackbird tenor ukulele becomes available in Ekoa, I will be buying it. And yes, hopefully, it will be in the traditional figure 8 shape.
But like the others have said on this thread, the Ekoa tenor will likely not materialise for some time. Joe Luttwak has said to me that he would like to concentrate on pushing out the Clara and the Ekoa jumbo guitar (El Capitan) into serious production first.
Don't hesitate to buy the Clara: You'd be part of history among the first to own an instrument in this truly miraculous material that is so light and apparently so hardy and also incredibly resonant. EVERYONE who has played my Clara has gone, "WOW!"
I am a HUGE Blackbird fan. My first was the travel guitar Rider Steel (which I have sold to fund my uke obession). Next came the parlor guitar, the Lucky 13, which I will never part with till the day I die.
Blackbird instruments always seem to have magnificent resonance, incredibly deep tone and huge volume.