This is an addictive little instrument to possess, I have been unable to go even a few hours without picking it up to have a jam. Most of the downsides are those which all Uke Basses suffer, namely the strings require much more winding to reach accurate tuning, the standard strings are very 'grippy' and don't slide as easily as nylon, they're also a little bit buzzy and noisy.
I replaced standard factory strings with Aquila ThunderReds and they are significantly better, more Gliss, less buzz and noise. However, this brings me to the major fault.
In order to change the strings easily you need a torch, and to remove the jack/XLR input, it's very tricky even then.
In summary, the first thing I did was restring it, the second thing I do will be to cut an access panel in the back!