I think the hold open is a little to over emphasized. Either way, when the gun is empty, it stops running. I think under stress, your still going to yank on that trigger, bolt open or not, so it really doesnt matter. You still have to "do" something to get it back in action, whether thats releasing the bolt or cycling it. I think its more a matter of knowing your guns manual of arms and being fluid and comfortable with it. As long as you practice until its done without thinking, it doesnt matter, you'll be back up and running without a thought. Sort of like thinking "guns" and your pistol is in your hand.
Correia,
Your pretty much talking about the Valmet, eh?