Nauticam Panasonic L10 short port questions.

So, I went to the local UW photo/video shop to ask for information about the Nauticam L10 housing. They don't have it in store and have to be special order.

Anyway, I was trying to get quote to put together the system. Even though it's a N50 system like the Nauticam LX100, I was told the short port from the LX100 housing won't work, and I wasn't given a reason. Instead, they told me the Nauticam L10 short port is either the Short Port 22 or Short Port 25, which none of them allows 67mm wet lens! So you're force into the bayonet mount system. There is no bayonet mount to 67mm converter. Therefore, you now have to spend extra $1400-$1700 depends if you get the WWL-1B or WWL-C.

My questions is, those who have the short port for Nauticam LX100, can you find a L10 housing and see if it works? My LX100 short port is permanently fused with the housing so I can't remove it.