Any other reason you want 50mm depth wheels for gravel? I used to run 38mm depth gravel wheels and even then they'd be prone to scratches from rocks and other debris. I'm now running 30x30mm depth hookless wheels with 25mm internal width. They're quite a bit lighter for climbing and less prone to rock scratches.
My riding/track profile is ~70-80% asphalt, ~20-30% (fine) gravel and very rarely (wide/solid) forrest roads. I have chosen the A/1 over a pure racing bike because of the slightly more relaxed geometry and the ability to mount more comfortable 32-35mm wide tyres (semi slicks). Perhaps an endurance bike would have been the optimal choice but I got a very good deal on the A/1 (1000€ shipped for the 700c Apex 1) and also liked that magnesium frame. Furthermore the region I live and ride in is neither particular hilly (thats why I got the 1x11 instead of a 2x) nor windy.
I totally appreciate your warnings on the disadvantages of higher rims, but I dont think those will be too relevant in the usual setting I will be driving them.
Nevertheless I am still thinking about going lower because 50mm might infact look a little goofy on a non-race, non-aero frame like the A/1s.
A pic of your 38mm rim equipped gravel would be very welcome
CSC France store is BS. They state that they ship everything from France but once you place the order it suddenly turns out that they are "out of stock" but can ship from China for no extra cost.
LOL, guess what - I asked that seller (Freesports Store) about options on different hubs and spokes and in their answer they also told me (without me actually asking for it) that those wheels arent in stock in the EU warehouse but they can ship it from China with DPD at no extra cost/VAT/duties!
So obviously the same seller on a different name...
Thing is: as long as I dont have to pay anything extra and dont have to mess around with customs, I couldnt care less where it is actually shipped from and if it takes one or two weeks longer to reach me...
So, besides their "fake EU warehouse" CSC is fine, arent they?