OK, I get it, no religion... So is this the thread where we can discuss race and immigration then? Because I have lots to say...........
Now I have been amongst wolves, oddly enough as a kid I was on a wolf hunt as the spotlight holder wile spotlight hunting wolves in the Hindu-Kush mountains where the wolf is considered very dangerous to people during bad years, very destructive to flocks always, (we got one) and have been around wolves in Alaska (Yukon, NWT) although never saw one - just heard them, and around Coram and Hungry Horse Montana where their re-introduction was much disliked by the locals but may be accepted now - in USA/Canada the wolf is never feared.
So basically - the European/Asian wolf is some danger - and when things get hard, or they feel cornered, possibly likely if they feel their kill is being invaded - they could be dangerous and people would be prudent to fear them. As bears are in USA/Canada. The North American wolf is harmless unless it is a pet. Great Blue herons are one of the only birds that have killed humans (herons spear fish with their massive beaks - I had a tame one I would throw 1 pound, live mullet and he would spear it through to his head with a mighty beak thrust!) and in N America herons have killed more humans than wolves have, to put it into reference (2 documented wolf kills in history).
So I am sure Spanish wolves - say, would be not too bad. Wildlife can be surprisingly different in different populations - same sub-species, different races. The tales from Hungary and the Balkans always had the killer wolf tales as part of their folk lore - as does Russia, Tibet, China... USA never has except as an old world hangover.
The choosing of the wolfs would be paramount. I think it would be fantastic for them to be back in Scotland - I passed the marker by the road on the way to John-O-Groats many times, where the last wolf had been shot. Some government fund would have to be set up to cover livestock kills, as it does in USA in areas where reintroduction happens. Although it would not be racially correct - if I may say so here, I hear eggshells creaking - I think some from Grand Isle Michigan would be good ones to import to Scotland.