I'm not.

This crowd is above average when it comes to optimizing the gear they use and bring with them, I am not at all surprised that no one here has tested this particular gadget. Too many gadgets, too little time... don't waste time on the gadgets that trip your junk-o-meter.

Quality scepticism aside, there are some objective reasons not to choose this particular combination of instruments. Here's why:

1) It violates the KISS principle. Big time. (Keep It Simple Stupid).

2) Base plate compasses (the transparent ones you can place on a map so it is easy to read direction from A to B) are pretty much what you want when using the compass with a map. I've yet to see a digital compass that you can use this way.

3) Neither altimeter, barometer nor thermometer are vital instruments for your survival. I can give you a long rant under which circumstances they are useful. My experience with altimeters is limited to the research I did before deciding NOT to buy one. I found out when and how it would be useful - and that was just too limited for my liking. In addition, altimeter use for navigation is made obsolete by the GPS. As a weather forecaster I have a pretty good idea of what you can extract from barometer and thermometer. Going into detail will be a long rant that concludes that you don't really need any of them. A compass, on the other hand, is vital.

4) Electronic gadgets can and will fail for a lot of reasons, including failure to charge the solar powered device during daylight hours. A good quality analog compass will only fail if you crush it or loose it.