Thanks for the really helpful responses!
It's not so much that I want a matching set, but I don't really want two tyres that I don't know & trying to spend forever working out which one's working.
I wasn't concerned about grip in snow, but it seems that the Sport Contacts are crap in damp conditions, which is the main thing that concerns me, so I can rule them out, thank you!
So, City Contacts stick well in the wet, can I ask, FyPuNK, does this include damp, greasy roads (you're in Blackpool, it can't be that different from Glasgow in climate)?
Mr Larrington, do you know how the Kojak compares to the Big Apple (or the City Contact)? Or what might be a better 26/20 combination (matching is less important than a recommendation)?
Mr Charly, aye, something like that, but stickified, condensed & scored, as outlined in the OP. & paselas don't come in 406/20"
Jacomus, the Supermotos look fine, but, as noted, don't come in 20". Thank you, however, for giving the info I really wanted to know.
It appears then (& sorry if this misses your needs, Mrs Pingu) that my choice is between City Contacts, Kojaks & Big Apples: does anyone have any opinions?
It's damp grip that concerns me: I'm getting a trike for bad conditions (which will be my 3rd bent in 18 months: is this a problem?)