Alvinmack5,
We purchased the alumaducer through Kevin Turner when we purchased our boat. He mounted it, and his partner in crime Sherry ordered the adapter from vexilar for us. Although, like you I was skeptical and had a very informative talk with a vexilar rep. They were very helpful, told me all about the transducer and then let me know what parts I would need to make it work. I was very impressed with both companies, Riverpro and vexilar.
As far as signal loss, I have not noticed any, although we fish very shallow here. When it gets under 6″, the X-52 starts to freak out a little, but resets itself to normal operation when it gets deeper. Very happy with the whole set up. Let me know if you have any more questions.
Good Luck,
Lakeskipper