The housing should be fine if it was maintained it properly. However, despite my conscious effort in maintaining the housing, it is slightly leaking after the second dive. Did tests before any dives and there were no signs of leakage, but after bringing it down, there were droplets of seawater in the housing.
Contacted the distributor in Singapore for the housing repair (still under warranty and it's definitely not user negligence). Unfortunately distributor in Singapore doesn't carry out any repairs. So, contacted EWA-Marine (principle company) to inquire on the procedures in returning the housing for repair. No response from them at all. Even when the distributor was helping me chase for answers, there were no response from EWA-Marine to them. Very bad and very unprofessional manner of doing business to both consumer and distributor. They were not providing much support for the distributor either.
If I were you, I would have bought LX1 as well as it's a fantastic land-based camera. But unfortunately, that's not the case. Lumix cameras with available underwater housing (third party or by Panasonic) are FX01/07, TZ1 and L1 (DSLR, Hugyfot underwater housing)
So, the answer to your last question is, no, there's no other optioins. Unless you wanna built your own underwater camera housing for LX1, which is possible.
Anyway, this is how the FX01/07 housing looks like: