Most Win7 skins are fine on Win10. There are a few issues which tend to pop up, but not on every skin (depends on how they happened to be done), but those can be fixed (or compensated for) in SkinStudio, and there are nice people here who are happy to help you on those specific issues.
Windows Explorer won't look "the same" on Win10 though, but it can be perfectly usable.
Also, several of the Win7 master skins have been updated for Win10, in case you have missed that.
Load up one of you favorite Win7 skins and see how it goes.