The Nautilus Lifeline or the body glove lifeline GPS radio

[jrl5549]

Has anyone used either?
The body Glove is for sale about 50$ less than the Nautilus, are they the same thing?
I have been looking (searched here) for reviews and opinions about either. There is not a lot on the gear forum about either one. If there is info some where else will you help me find it?
Thank you

 

[crgravitt]

I'm beginning to research these, too. Will post anything I think might be helpful.