I use them a lot, and the definitely do work!
My most success so far have been with the no 1 (15g) v-back in either the hot Orange (dirty water / very rough water) and the glow white in clearer, calmer conditions and when it is still dark / getting dark. This has accounted for shad, wave Garrick and even a small thread-fin (bastard) mullet.
Also used the bigger ones, no 2 and 3's, same colours, only got shad on them so far...... the Garrick, Natal snoek and kob is still eluding me.
As for the paint coming off easily. This is to some extend true especially fished in rocky areas, but few paint-jobs on lead will stand this. This however did not change my success on shad much, as there remained enough paint to attract attention. On the Sandy beaches they hold up fairly well, unless constantly dragged on the bottom for Kob, then the paint on the keel tend to rub off.
One thing that I do however feel is that we are being smoked in terms of the price that these, and most other spoons go for. But as has been said on many occasions before... we are the ones that are willing to pay these prices for things that work. Main reason why I started experimenting with my own..... If only times was not so few!