Had a pup in 80's bred from one of douglas's line ( supposedly ), put to a smooth black bitch of hancock's early border/beardiex greys, then put back to another douglas type. Sire was a rough light brindle dog at 26 1/2" and was used more for deer than anything else, but could certainly catch more than a few hares day and night.
My pup which I called 'steel' was shaping up very nice, when I let her into the garden for 10 mins, and some c**t did actually 'steal' her! After that, have never left a dog of mine outside without watching it!