Last month I went to Prague and took only the DJI Osmo Pocket - I had no ND filters at the time and was out there with a friend so had to enjoy it, but managed to make this film that I'm very happy with. The results from this thing are amazing in most conditions and the focus pumping has definitely decreased in 'normal situations', the only time it realyl suffered here was when I did a focus pull. This was also before the manual settings update, which has added so much more use for this device!
Have a watch and if you're interested in the Osmo Pocket and small filming equipment, I'd love it if you subscribed to my channel as I'll be making more videos on the OP and other equipment and tips that will help keep your films big and your equipment small!