We did this last week I think but I’ve just received my wheel parts ready from when my Caminoir arrives – XTR hubs bought BNIB off ebay, and I’ve gone for DT Swiss XR361 rims. Lighter than they ‘gravel specific’ rims they do, mid width (23mm). Will be running 700x 30 somehting slicks in summer and 700x45ish in winter.
Building them myself, its costing me about £340. Will be very nice wheels for that price, DT rekcons total weight 1672G for something that is effectively XC mtb strong.
The Mavic Allroad SL would probably have been my off-the-peg choice though, really like the XA Elite wheels on my hardtail. Fractionally narrower rim though, and a lot more money for the SL versions at similar weight to my home built wheels. The cheaper S wheels are a bit heavier.