With a low RPM engine such as ours, I would not move to synthetic. I run Rotella T6 on my FZ6, but I run standard Rotella T on my VN750 and my wife's ER6n.
The biggest thing about oil is actually having some in the engine. That's the most important part. However, I think it'd be a huge waste of money to run T6 or another synthetic in an engine that was designed for standard dino oil.
You would see zero benefit from that transition. Since there is no benefit for the extra cash you'd spend, it does not seem like a route I'd take.
1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Rebuilt Forks w/ Progressive Springs
VN750.com Grill Cover
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R
1990 Kawasaki Vulcan 750
1998 Honda VFR800 FI
2014 Honda VFR800F
1989 Pontiac Firebird Formula 350