I have built one as an experiment which worked quite well.
For Astro-photography it can be a bit fiddly. I was using cheap wood so there was a bit of flex but when I got it right the shot I achieved were not bad.
I have move three time since that build and I am concentrating on my 80/480mm on an EQ5 but afterwards I will consider either an EQ platform or may go to a Horseshoe mount.
Link to images most planetary taken on my 12" DOB on a platform. I will try to add some photos of the platform when I locate them.
https://goo.gl/photos/GTBnU2A9t4QYnSJt8 - M42/3
https://goo.gl/photos/XfRRMAPmS7JKRJSf6 - Moon wide angle
https://goo.gl/photos/gmoxALQhJ6o7ZKaUA - Moon with a 3 x Barlow
https://goo.gl/photos/9Z5x5jCR6EiKi76fA - Jupiter
https://goo.gl/photos/PWncpjp8w62QQ4B37 - Venus
https://goo.gl/photos/DVRofECCoJwXfRiM8 - Neptune
and many more planetary. Not much on deep sky as I moved soon after the M42 shot and dismantled the EQ Platform in the hope of building another one more stable.