Vape pen as close to an Ecig as possible?

Do any of you guys have any experience or knowledge/reviews about a vaporizer for herb material (can also do wax or oil optional but needs to do herbs as well) that looks as close to an ecig as possible for regular inconspicuous use outside?

Needs to not combust obv.

Also, what is the point of using a mouthpiece or straw OR straw+mouthpiece on the NO2 Vapir? Just too share it without sharing spit? lol

I know the persei and omicron both do dry herbs and concentrates but there are knock offs that are very similar I have yet to try. Most of the time you get what you pay for so I would splurge a bit if its important to you.

I was just looking at the White Rhino DV2. It also works for waxs/oils and herbs. Seems to have good reviews