I don't know if my email answered your question, in case it didn't here is some feedback I have on your post here.
Navman doesn't have a sleeve version for the h2215 because the h2215 does not support sleeves.
The Ambicom GPS package we reviewed does have a full version of the navigation and map software for $199, and they do work together.
I told you in my email to check out buygpsnow.com who sells just the receivers if you don't want the navigation software. Also Pharos sells an SD GPS receiver which will eliminate the wire problem and it's cheaper than the BT package.