Not... but still pondering it. As a sailor, I've seen the marine environment break down every sort of weather sealing - within a period of time and exposure. On a new and "babied" camera, I'd trust the weather sealing. On an older camera that's spent a long time outdoors, eventually the sealing will break down. Especially if that water has salt in it... and especially if you're in the habit of testing it ... "just for yucks".
So for me, I tend to baby equipment anyway. You can weather seal it all you want... that's just insurance in my view. Do I want to test it and rely on it? Absolutely not. So this begs the question. I've opted not to spring for the X-T1 at an extra $300 for a body relative to the X-T10. Would I prefer to have a WR (note resistant not sealed is the actual term) ? Sure. I'm a belt AND suspenders kind of guy, and if you give it to me, I'll take it. Paying extra for it.... choice of a $800 brand new X-T10 with a full warranty vs. a $900 Used X-T1 or $1,100 New-on-sale... came down to newer operating system at a lower price.
Benefits of the X-T1 that X-T10 doesn't have? ISO dial. Yes I miss will that, but my X-E1 doesn't have that either. UHS-II interface for fast memory cards. Yes, I will miss that, but with the right card... not much. WR? This just isn't the top of the list. So for now.... have a pre-order in with B&H... but for $200 more, "upgrading" to USED without a warranty or $350 extra for NEW... I'm just not sure it isn't better saved for now and applied either to the "next" (X-T2 as originally intended in my case) or a lens (90mm fixed or long telephoto when it comes out).