did the trip today from Bega to Cooma in my Renault Master Motorhome, the road is in good condition yes steep in parts and windy but no worse than many other roads over the mountain, 10k long but better than Macquarie pass and Bulli pass just longer, check out Nimmitabel bakery
Also on the snowy mountain highway just east of Talbingo is a very steep section 6 k long, came down from east to west and had the auto in 2nd gear to save brakes
Towed our 3 tonne 21 footer up this about a month ago with a Ford Ranger. No problems at all. Slow for 10ks due to climb and very low speed bends but just took it easy and had no issues.