Hello all,
I am a long time lurker on this great forum. I can read German perfectly but I can only write in English! Writing in German is just soooo difficult. Sorry!... 
I have sold my 990 SD and ordered the first 690 SMR (with the Akra system) in Holland almost 2 months ago. But my dealer has also ordered the SMC so I can still switch if I want. In the meantime if have a 690 SM demo bike from my dealer to use as long as I want. Great!!
I like the SMC very much too because of it's great looks. But I think the SMC is a style/image/marketing product. It has nothing to do with 'Competition'. The SMC uses the enduro/off-road frame/chassis. This frame is almost 10cm narrower with thinner frame-tubes than the SM frame so it's less stiff. It also has extremely long suspension travel of 275/260mm F/R. Both are clear disadvantages for the street. Also, the wheelbase is longer and the steering-head angle is slower too. And last but not least, the Centre of Gravity (zwerpunkt?) is higher is further back due to the fueltank at the rear. Good for an off-road bike, not so good for a street bike.
There is no way the SMC can handle and steer as good as the SM(R)/Duke chassis on the street. Especially not at higher speeds. And it doesn't make any sense from a design point of view either. If the enduro frame/chassis would be just as good or better on the street, why would KTM go through all the trouble and cost of designing a totally different frame and setup for the street oriented models SM & Duke?
I have ridden the SM demo for a few hundred KMs now and I can only say that this is the best handling and steering bike I have ever ridden. Even much better than the 990SD. It's absolutely stunning an sooooo much fun!! 
Richard.
Amsterdam, Holland