The pricepoint of the GX 7 speed DH cassette is very attractive and available, but I understand its based on 11 speed indexing.
I have a saint shifter and zee DH mech (plus a oneup DH block) so rather than paying loads more to delete the big 3 off a 10 speed cassette, will the 0.05mm difference between 10 and 11 speed sprocket pitch cause real world issues?

Presumably I could use 10 speed spacers between all but the 2 smaller cogs.
Anyone tried this combo?