I clicked on their site (because I had never heard of them and was curious) and immediately saw their rim cross sectional graphic. Those tubeless Corsa Speeds are an absolute bear to get on a rim without the tubeless specific dropped center channel. If they are 'for racing' only you are either going to be switching tires occasionally (another reason not to go tubeless) or they will be sitting unused and deflate. Another perk of the 'bead shelf' for a tubeless specific rim is to keep the system sealed when it loses pressures and your sealant won't try out as quickly. A rim like the one pictured at your link will allow air to get in as the tire loses pressure and will dry out your sealant in a hurry. This will create a (further) unbalanced wheel and will require a new application of sealant and a hit from the compressor before every race.

Edit: I see SDM advertises their wheels as tubeless ready, but none of their pictures would lead me to believe that. So there's a bit of a red flag either way.