Well, I guess there may be valid reasons to avoid the sonorous 'ping!' of an 8-round, 150-grain, en bloc clip, though I cannot think of any. In fact it seems any potential enemy willing to make a move based on that sound doesn't really know just how fast another can be shoved in. In fact, I'm seeing the wisdom now in en bloc and stripper clips, though they may have less capacity than banana mags: you will never have to take the time to reload or even top-off a magazine if using en bloc or stripper clips. If you're carrying enough ammo, it's already all ready. The rifle can always be reloaded just as fast, every time (as fast as you can change a bigger magazine, but never have to reload that magazine).
I drove from Austin to Dallas to Anniston, AL and back as far as Vicksburg, MS in one day last week to get my Garand and ammo, and I took the first opportunity to rattle off a clip and hear that sound (I'd say it's more of a 'clang!', but it's all academic at that point...
) Joining a rifle club this week just so I can hear that sound of freedom ringing through the air as much as possible!
For those interested, at the CMP I found a field grade SA Garand ser# 5,xxx,xxx in pretty darn good shape, '55 vintage, shoots on at 100yds without adjustment. The guys at the south CMP are gold in my book!