The front profile is basically a straight taper but it looks slightly rounded as it gets a little bit extra narrow towards the tip where the nock fits.
The 'inflated taper' look shows up more on very heavy draw weight bows. I saw a 170# bow in use a while back which was pretty fat, but tapered considerably faster over the last third giving the curvyed taper look. Note the side profile is pretty much the same, and the cross secion varies from 'classic' D to squareish with rounded corners to almost round. Avoid the nasty looking fades upto the handle unless you want it to look 'modern' or Victorian.
I would dn't try side nocks in wood. Conventional nocks just cut into the side of the bow are fine even in Yew (IMO) I have heard people say it's a prob in high draw weight bows, and obviously if you go for self nocks you would leave some extra meat on the tip.
I've only done side nocks once (see my website, click the globe symbol under my username) they are ok, a bit easier to do than 'conventional' horn ELB nocks, but still fiddly to try to get the groove as nice as possible .
Del