Hi Greg
I have DSTV (single view) and no my decoder does not have digital coax out. However my neighbour has the dual view decoder and his does have digital coax out. Unfortunately they only transmit in stereo, I dont think they have the forsight yet to transmit in 5.1. I beleive the UK has only had 5.1 transmission for about 18 months on FREEVIEW (can anyone confirm this?) so we should get it in about 2025AD.
BTW I run my dstv into my amp and it sounds quite good in PLII.
Skinny