Those seeking the XCI version want the physical cartridge data because it often loads faster on custom firmware (CFW) and requires no "installation" in the traditional emulator sense.
Offline multiplayer works perfectly. However, if you use a "Free Download" XCI and attempt to connect to Nintendo's servers for the online ranked "Xtreme Tower" mode, you will receive a error code 2124-5002 (Console ban risk). Only play offline. BEYBLADE X XONE Switch XCI Free Download