Investment? I hope you just mean as something to ride in the future. I wouldn't expect that bike to gain any special value over time. Better ways to invest that cash if you want a return.
But if you're gonna ride it... go on! Just watch out for the sport/full mode where the engines at full power with an agressive throttle map - it's a rocket in low gears.
I'll definitely start slow on this one - pretty massive size.
And I'll politely disagree with you on the value point. ROI on the majority of short-term cash investments is squat right now, and these bikes are limited (numbered & guaranteed to never be produced again, thanks to the buyout) such that a mint example should pull a decent return relatively soon.
Speaking of, paperwork was finalized today: