Possible to use XAuth without a password? (re: home network)

[sofakng]

I'm using pfSense 2.0 with IPsec and Mutual RSA + Xauth authentication.

However, everytime I connect with my iPhone it prompts for the Xauth password and there is no way to save it.  Since I'm already using RSA (certificate) authentication, how unsafe is it to have no Xauth password?

This is a home network so I only have one user (i.e. myself) and I'd think that the RSA certificate authentication is even safer than a password so…?