I think the Garand was the wonder weapon of it's day and is still an awesome rifle. With some practice it can be reloaded very quickly. But with today's modern weapons why limit yourself to 8-10 rnds. True, in a SD situation, if you need more than 10 rounds you are in a world of Do-Do and more probably won't help. But in a SHTF situation it is my opinion that you will want/need all you can carry and hi-cap mags are the easiest way to accomplish it. JMO
My SKS will accept AK mags by the way and is a very capable weapon. I would much rather have it in my hands than a long hi-cap shotgun.