55g clears on mods are going to feel sticky lubed or unlubed, even if it doesn't technically stay down. The problem is not with the switch, but the way the switch is used.
As someone who loves his 55g ergo clears, even I don't use them for modifier keys. 55g (if one doesn't mind the lightness of the switch) is meant to be struck, with a quick jab, rather than being held down, then slowly released. The former would be the alphakeys, and the latter, modifiers, arrow keys etc. I'm gonna have to say that after being on 55g for a long time, having built a second 62g variant of ergodox, I couldn't stand how heavy the switch was, and the tactility felt so muddy in comparison to 55gs. I'm sure I can acclimatize to it if I used it for a while, but I have no urge to do so. It's all about preference.
But since we're already on the topic of modded keyboards, hardly far fetched or hard to simply leave alphakeys as ergoclears and swap in browns for modifiers instead. It's how I have my ergodox set up.
I never had a single 55g clear stick, even without lubrication. A little jammy, sure. But none ever failed.