I think the range has spilled over from niche-filling into plain old confusing. If a forum full of enthusiasts can't keep track, what hope has the great unwashed?
And the poor old retailer hasn't a hope of keeping any sort of decent stock levels. I travelled 30 miles to a specialist shop and they had bugger all for me to try. So I came home with Walshs. I do admire what Inov-8 have done, but I can't see that their vast range is doing them any favours.