Bottles seems to be a GUI to manage many installations of Wine version/variants and application environments connected to them (independent of a users Linux distribution). If you just want to run Roon, this seems to be overkill. If someone needs to run many versions/variants of Wine for different windows software and/or regularly wants to test software with different versions/variants of Wine, Bottles may be a comfortable GUI to help manage this tasks. The included sharing feature may also come in handy.
The longer boot times (but not only) are the price you have to pay for it.
Click on the picture to open the source page.