Hmmm - need to clarify what Penguinetta (bless her) told you; I would only use such methods as the above as yet another reminder of potential scrapes, in case I'm having a particularly blonde day... maybe, just maybe, I might fail to pay attention to chart and altimeter if I were very distracted but would glance at the GPS for a second and know I was close to trouble.
However, LowNSlow, I have seen the results of the software you mention and believe you completely about its wonders.
Maybe for Christmas, eh?