I do not know whether its been because of past customers of BigEvil's (people not paying for work done, complaints over pricing, or what have you) or
its easier for everyone to just have your ano guy tape the pin off, it may have a slight blemish around it but its never seen when installed on a marker...
I agree, it's entirely up to you. However a custom valve would look pretty cool.
The only concern I know of would be removing the steel