I don't have that model but I can very confidently say : - do NOT buy an e-bike with custom parts, no matter how "cool" it is! I bought a CowBoy years ago and honestly, it was great. Until it wasn't. Inexorably, it does not matter how good the parts are, how well designed it is, wear and tear WILL create problems. You WILL need to replace parts. If nobody but the company making the bike sell them you will get in trou…
Now of course there are areas you can make trade offs. A lot of people like MacBooks despite them not supporting other operating systems very well and Apple still mostly being hardasses about outside repair, but they come with good performance and battery life.
Making sure to keep maintainability in mind when making a product decision is critical to making an informed purchase.