I'd say early nade tech to rekt a sturm squad and the follow up volk squads has a good success rate vs sub top 200s
At top 200 and above i'd just get a cleverly placed fighting pit for nades and save the munitions and fuel if you want early nades.
Early nades (like 3 rifles -> nades) are a very unstandard build, thus it has decent surprise value. Especially the better players aren't expecting it because it is such an unusual build - therefore it can work better than you'd expect when they don't react quickly enough to the first nade.