Yes, we did
For the issue of fertile/infertile - if you crack it open you can examine the germinal disc (white spot on yolk) - of course this makes it useless for incubation, but will tell you if the rest of the eggs you are getting *should* be fertile as well (those you could set)...
Beautiful girl! Many hens will develop spur bumps or even actual spurs - and many roosters will go their entire life without ever developing spurs - which makes their presence/absence an unreliable gender indicator to use.