I've always used a fencing style and never been stung through the veil - or any other part of the "hat". I also have a round veil which I tried, but now keep for visitors. In addition to the washing aspect, I find that on mine anyway, because the material below the veil part (ie under the chin) is cotton, the visibility is restricted - I have to look sort of up and over the cotton. If it were mesh beneath the chin down to the zip, visibility would be greatly improved, but I'd be a concerned about stings to the chin/neck area. I also find that, as the round veil is a lot wider, it gets caught on hedges/shed walls etc, as I am moving about, and that's saying something as I am very broad in the beam!
I started with a sherriff (due to some very kind friends who clubbed together!), and last year I reverted to a sherriff. The veil is far superior - now that my eyes are fading, I find that the "extruded" mesh veils are too dense - and you sometimes get the sun shining off the plastic(?). The "woven" mesh that sherriff uses is excellent: the vis is so good, I have found myself wondering if that bee in front of my face is inside! (Needless to say, it isn't!)
Even the OH was convinced by the visibility and he doesn't part with money easily...
(PS I don't have any interests in sherriff).
PPS my original sherriff smock lasted decades (with one re-meshing of the veil and a few holes due to barb wire). In the end, I outgrew it!