Guy, just a couple of cautions. I prefer the collapsible rubber for proyection and ease of use. I bought a couple of 40.5 rubber hoods from B&H for my CLE and found that I can only use them on the 90. On the 40 and 28 they block the rangefinder window making focussing difficult without a rangefinder patch.
Looking at my Lynx 14, I would guess that just about any solid, non vented, hood would definitely block the Rf window and would also probably block the CDS cell.
Happiness is a CLE with a collapsible Summicron, loaded with Scala.