Mojo G Force Pump battery compartment & insertable sleeves for pumps ?

I thought Id consider the pump again ( seeing as I couldnt open the first ) and wanted to ask how easy it is open the compartment in this one compared to others ?

Also whether there are any accessories such as Fanta-Flesh Pump Pleasure Sleeve from pump workx that exist and can be used with this or other models ?

fingers crossed

hc