The Wiggle ones are the older model too! They should both measure at 27mm width I think, the Open ones (clinchers) can be bought in 24 or 27, so check width for the Wiggle ones as I couldn't see where it was specified.
They are awesome tyres, fantastic in bad weather, and ride like a well sprung sofa. I use the open 24s extensively for training and commuting. They aren't cheap though, but I reckon they're worth it.
Not so much a six pack as a barrel!
1959 Carlton Continental 1982 Carlton Professional
1987 Peugeot Perthus Pro 753 1995 Colnago Superissimo
1995? Vernon Barker MTB 1993 Colnago MTB
2005 Colnago CT2 1978 Carlton Clubman