I've been doing it for 20 years and have never been caught. I've never even heard of i2p until here just a couple of weeks ago. The fact that certain people are pushing it so hard and referring to standard methods in such a derogatory way makes me highly skeptical of trying it out.
And just because there is some new method available doesn't mean you're retaining your privacy there either. I have a VPN to hide my IP and as far as I'm concerned that's enough 'privacy' to avoid any issues.
What's the worst that'll happen, my ISP sends me a letter telling me to knock it off? You're acting like this is some sort of top secret black ops mission in need of complete secrecy.
That's my point, that's significantly more effort then just implementing i2p. You shouldn't have to worry about that because we should be using better protocols. It's the protocol's fault here, and VPNs are band-aid solutions.
BiglyBT handles all of the I2P router itself if you don't have a existing install, you can point it to an existing I2P install if you have one that's running 24/7 so is well integrated which is what I do