Yes I think the boots I have are called Sidi Discovery over in the US. They are about $20 more expensive than the Trial Zero, but they have the waterproof lining.
The Novogar boots seem to be very similar to the Gaerne boots in construction, and have only just become available over here. They are much cheaper than the other brands, but seem well made and comfortable.
There is also a cheaper model of Gaerne which is oiled rather than pigmented leather which are much the same as their Balance model just a bit cheaper for those on a tight budget.
I chose the Sidi boots because we have a lot of wet trials over here especially in winter, and I like dry feet!! The boots themselves didn't seem to need to break in, and are very comfortable. The soles seem to be wearing well, and are replaceable if needed. I have had these boots for about two years now, and when clean they still look pretty much like new - minus a few scratches from the odd crash.