Hookless Zipp 303 FC vs DT Swiss GRC 1400

[Chain-L]

I am considering a new gravel bike fitted with ZIPP 303 FC (hookless 25mm internal width) wheelset. I am currently riding a gravel bike with DT Swiss GRC 1400 wheel with which I am really happy and had no issues with in two years.
I have seen many issues with tyres coming off rims when the ZIPPs are used for road at presumably the 5 bar pressure limit with 28 or 30mm tyres. 
Has anyone experienced issues with the ZIPP 303 FC wheels with tyres coming off and how do you find the wheels in general for road and gravel use?
 

I am planning on using the ZIPP wheels with 32/34mm road tires (GP 5000 most likely) and 38/45 gravel tyres (Gravel Kings/Schwalbe  most likely). Has anyone tried these combos on the ZIPP and did you have any issues?
Thanks!

Edited March 13 by Chain-L