The learning curve is not really that much of a problem. Most of it can be done with a balloon so you do not draw blood while learning the basic handling of the razor. It still is not too suitable for the use you described. That is why I have got the DOVO for my travel kit.
The single blade razor is really a good alternative. I am satisfied with mine. In a pinch it works with the foam from a can or regular soap and a blade lasts for about fifteen shaves. My facial hair is really strong.