should be within the next several days i believe, we're all just waiting for guy to post haha.
Any chance you can compare to Alden Indys?
I wear 8.5D in Alden Indys (as well as White's, Wesco, RW) and have the Viberg 1950 in both the 310 and 2030 lasts in a size 8. The 310 last in a size 8 fits me well and while the 2030 still fits, it's a bit snug for my liking. If I was to get another 2030, I'll go 8.5.
I think if you're a 8.5D in Alden Indys an 8.5UK in Viberg is going to be extremely long, and the ball of your foot is going to be up past the widest part of the shoe. I'd only look at 7.5UK or 8UK MAX, otherwise I'd say the boot last just doesn't fit your foot.
The toe cap on either boot is optional; same with the toe box.
The main difference, I believe, is that the 1950 Service Boot has a top band whereas the 1940 Service Boot doesn't.