hey, they are not 'marketed' as xc boots specifically but if you look on ebay and search 'de boiz' (the guys who make the tail guards!) they have leather comp boots on special offer at a tenner at the moment - look very nice, im thinking of getting some!
Ive just looked to as your post reminded me to buy some and they are not there! They were ealier in the week - ive emailed them to see if they are putting more on. You can see them on this page priced a bit higher..... http://www.deboiz.co.uk/ im pretty sure i remember a few years ago seeing these for around 50 quid a pair.....