Have two pairs of ATF boots and the newer offerings are amazing in comparison to their older repros.
I had a pair of their double buckle boots and these were very wobly and wide. I believe these had the Biltrite soles and as you said: clumsy.i got a fairly old pair of their boondockers which ain't that good - too wide - a bit clumpsy
that said i never seen one of the newer ones in real but on those pics they look good