The Kufatec loom will be as if it was factory fitted, wired into the fuse box as it should be, i wouldn't mess about with non factory switches just bite the bullet and get the OE ones.
vagcat.com
get switches for a lhd. if you go for rhd you will need to change the rear demist switch and parengers airbag light
Here you go mate, 1M1963563 L/H/S , 1M1963564 R/H/S there is only one part number for these switches you cant chose LHD or RHD. These following part numbers for the rear window demist, the first one is for a normal on/of switch the second is for the timed version which goes of on its own after about 15 mins, its a bit more expensive but its worth it, (IMO) 1M1941503-Normal/RHD 1M2941503-RHD/timer