Also, it seems that I2P is more vulnerable against deanonymization when leaving the hidden network, i think the official I2P faq has some info about that, but have not read up upon it myself.

on a quick look I did not find such a mention, but in any case in addition to that, I2P users often don’t have such a fortified browser as Tor users do, so that’s also something to count with.

and maybe it’s not a good idea either to just reconfigure a Tor browser profile for I2P