Thanks so much guys.
I completely agree re:the plastic arms, although I'd argue the space orks that were available around the same time are more grievous offenders in that regard!
They just require so much effort and tinkering to make them look nice, and even more (pinning etc...) if you want them to stand up to even moderate play and handling.
For that reason, these guys are all pinned to buggery and also gloss then matt varnished to make sure they're usable as gaming pieces first and foremost.
I do like that they're done with era appropriate bits though, makes my inner 14 year old smile! Even he is happy to give in to modern bits for the space orks though (thank god for knightmare games!)
I never liked transfers much either but had to give in to them for the blood angels symbols (I'm not that much of a masochist!). Everything else is free hand, hence the slight wonkiness to the skulls (but I think it lends them a bit of character)