Negative Height Valve Spring Retainers

I found these:

VTO, 4140 Chrome Moly Steel Retainers 10 Degree 1.437"-1.450" - Competition Products

and these:

https://www.compcams.com/super-lockstm-10-176-angle-3-8-stem-size-16-qty.html

This would give me 0.100" without shims.

So the question is this - is there any problem mixing locks and retainers from two different manufacturers?