Experiences With Alpin Skiing Slope Maps from Garmin and/or Skidea?

I found two usage ready solutions to get slope maps on Garmin devices:

https://buy.garmin.com/en-GB/GB/p/661709

and

http://skidea.com/

Any experience with either one of these on the F5+? I don#t know whether it is even worth it but I guess have the slopes marked on your map is kinda neat.