I have Silver Water & Birch. Sounds nice doesn't it? To me is smells exactly like the old Aqua Net hairspray my mom used when I was growing up. I had my sister smell it and she said the same thing.
I have the Leather and Oud scent. I like it and it's good quality. However, the oud is obviously synthetic and it's INTENSE. Performance and longevity are not an issue. The issue for me is that sometimes I think it smells great and at other times it strikes me as cloying. Still, it's worth having and I don't regret it. I have no idea how it will perform in the heat.
I noticed that about the Leather and Oud. I sprayed a squirt on my arm and once dry it was so intense that I couldn't get my nose near it. I thoroughly washed it off, but the scent came back as a more subdued smokey wood that was enjoyable. It stayed on my arm all night and remained pleasant without being cloying. I think this may be one of those scents that you have to spray into the air and just walk through the mist to apply.