I moved from Lenzetto to Estradot two months ago Disco. I don't have problems with the patch sticking, though I do like to cover it with a Tegaderm patch as Flossie recommended, just for extra security. I did find that when I would have a boiling hot bath, I felt like it impacted absorption - I subsequently did a bit of research and found that Estradot patches specifically are not stable at over 35 degrees, which is probably why. So I stick to showers now.
Another side note is that my experience mirrors that of most other people here, in that Estradot is significantly stronger than Lenzetto - even more so than the revised equivalents they gave. A 50mg patch is supposed to be equivalent to 3 sprays of Lenzetto (formely 2), but my Estrogen blood test on only a 37.5mg patch was significantly higher than on 2 sprays of Lenzetto (and I have very reliable blood tests - I do them often). This may not apply to Oestrogel, but my advice if you do switch would be to err on the side of the lower end of the swap and increase when you need it - I'd imagine you'd know pretty quickly it it was too low! Good luck and keep us posted xx