Snowshoe races, now that would be fun.
Personally, when I think about what I've been doing recently, I've been leaning toward progression runs myself so I guess I'd concur. That said, while Magill points out the potential pitfalls of running a tempo run wrong, it's also possible to run a progression wrong in similar ways (primarily running too hard). I've found it to be less likely to happen but still possible.
I think there is benefit in both. I personally wouldn't rule out either option as Magill seems to with the tempo run, though I would advise caution in doing either.
As for his thoughts in contrast to Summer of Malmo, I think there is value that can be found in both. For the youth runner, I think there are aspects of both that could be beneficial and enjoyable. I'd probably prefer some hybrid of both.
I've actually had some individuals pressure me to expand on my reference to the "Winter of Hillrunner" I referenced when mentioning Summer of Malmo in one of the articles. I don't want to seem like a bandwagon jumper but doing just that is on my list of potential future articles. Maybe I'll have to think about that. Of course, with the wisdom of Magill and Malmo already out there, I'm not sure how much I could add to the topic so such an article may go nowhere fast as I realize I'm just repeating what has already been said.