C1M1 experience with M1G

I need to get rid of the old Uplink that's sunset date is the end of the year.  I was just going to buy a new Uplink, but I keep having second thoughts.
 
The C1M1 would allow me to replace 3 different components, probably save some power, and maybe add a bit more longivity.  So I'm thinking of just paying the extra $300 or so.
 
There seems little discussion about it though.  Anyone used it?   Any issues/concerns? 
 
I'm not really asking if it is worth it -- I doubt it is.  But if I decide to splurge to get a somewhat simpler system, is it actually going to work well!?

PS. It would be used on Alarm Relay.

There has been some discussion about the C1M1 in this other thread.  I think the comment by @DEL that the C1M1 is not targeted at DIYers is something to think about.

I just replied to another similar topic, but I did deploy a C1M1 with Alarm Relay, and it was pretty easy and I'm pretty happy. 
 
You do need to pay a higher rate then their advertised cost, since they have to pay Telguad for the cell service.
 
It was easy to setup and provided what I needed.