http://nguipxnkrp3qrzrlduhsatpcpwehnblzmlkc5ifiumxq4z5jlh4lwvid.onion/os_archive/os_vpn_proxy_tor_2.html
Your IP might be hidden, and, if don't reveal yourself with poor opsec, your identity might not be immediately obvious, but it will be possible to correlate and link all your browsing sessions. This might, or might not, be enough to deanonymize you. (I hope you are able to see, then, the following corollary: using the same fingerprintable browser over Tor and on clearnet is the same as only using it over clearnet.)