A lighter frame may get you more speed = more miles but usually comes at the cost of less sturdiness.
I own a Vado SL 4.0 EQ myself and use it for everyday commuting, groceries shopping and for trips when the weather is rough / roads dirty.
Earlier this year I wanted to get a bike just for workouts that is lighter, runs on thinner wheels and has a more advanced gear set.
I looked into the Creo, but felt that Creos are still on the heavier side of e-racing bikes, plus the prices for the carbon models were very steep and I also wanted an engine that easier disengages / is less noisy than the
Specialized 1.1(although on my Vado I really like the engine).
Finally went for a Scott Addict eRide with carbonframe, new Mahle X20 hub egine and electronic gear shifting. It is a nice bike a I really love to do my work outs on it . It is really fast and most times I ride well beyond the 25 km/h, so the engine rarely kicks in and the battery - albeit smaller than on the Vado SL - holds for ages without even needing a range extender.
But it is of course a completely different concept... no rack from luggage, using click pedals, thin wheels ands a carbon frame. you need good pavement to roll on and should avoid bigger bumps or dirty roads with small stones / shattered glass that will much faster make your tire go flat than on the Vado SL (had this "pleasure" already two times this year when crossing Copenhagen city centre on larger tours). Those carbon frame bikes with thin wheels are quite fragile
You could of course take an EVO model, but then the difference to a VADO SL may not be that big as you get thicker wheels again.
So in a nutshell, a carbon frame e-racing bike does not replace what you can do with the Vado SL, i.e. everyday commuting (especially when riding in the city during rush hour or rough weather) and any luggage carrying. Having said that, surely the Creo is an interesting bike but for serious e-racing bike workouts, there are lighter and slightly cheaper models on the market than the Creo.