Before I spend hours sorting bikes out and trying to make this work.. anybody swap road/mtb on a direct drive turbo?

Wahoo kickr. I have the converters for different spacings.

Currently set up for regular 135mm qr spacing. If I want to put my mtb on there 142×12 thru axle, will it index? I’m assuming it’s all going to be 3.5mm further over – I don’t want to bugger about with set up of either bike. Both are 10 speed setups, mtb is 1×10 long cage mech. Will it work? Don’t mind if it’s a bit rough but I’d like to use the gears rather than just have to stick it in erg mode.

Cheers