Are there any Bitcoin wallets with native I2P integration? Tor usage seems to be fairly common with Bitcoin, but I have heard less about efforts of integrating with the I2P efforts.

Tor and I2P both have their pros and cons, but I am curious to here about what I2P efforts have been made to this point and why more attention has so far focused on tor.
C++ may be viewed by some as more suitable for Bitcoin use than Java which I2P currently heavily relies upon

https://github.com/monero-project/kovri

Kovri:


To cover, veil, wrap (Esperanto). 
A secure, private, untraceable C++ implementation of the I2P anonymous network.


Once complete this project should ease of integrating Bitcoin in both a private and secure manner.