I will say it's a talent I basically never get. And I usually metamorph Point blank as without RoSS I do better damage with whatever melee weapons I find on the ground that trying to use the bow.
I don't think I'd take dew shielding much if it were only buffed though, the reason I love Huntress as a ranged character is avoiding melee to begin with.
I take shielding dew as a talent occasionally and I very, very, rarely have shielding unless I'm absolutely spamming regrowth effects. You really have to work to keep a usable amount of it applied at any time. You're more likely to exhaust your regrowth wand than to keep the shield up consistently.
Maybe I'm doing something wrong but I wasn't able to keep it active more than occasionally with a ~+3 wand of regrowth.
I feel like maybe the amount of shielding gained per drop could be a bit higher or the decay could be a bit slower or something.