Cool! How does it compare to the non L version? I’ve heard people say its on par sharpness wise but contrast is better. I’d certainly appreciate the weather sealing though!
My 100mm non-L was about 13 years old, so it might have degraded over time. The 100mm L I bought a few months ago is better pretty much every way, it's sharper in the center at MFD, the USM motor is quieter, it has IS (which isn't quiet) and the lens hood is both included and sturdier. The only downside for me is that I have to screw on the macrolite adapter to use the MT24 and MT14 flashes, the EF-s 60mm and 100mm non-L have those builtin. With the adapter mounted you can't use the lens cap :/
Since I alternate between the 100mm and MP-E 65mm a lot, for me, the new Laowa 100mm would have been a better choice since that goes from infinity to 2x, the 100mm L only to 1x, the MP-E can't do infinity.