(Note that these are not my videos, but videos that I found)
The swinging volley is a very aggressive shot where you are hitting the ball out of the air with a normal groundstroke. Players commonly use this shot to capitalize on high-floating returns. The benefits that you can reap from using the swinging volley is cutting time away from your opponent. Being able to hit this shot will ,without a doubt, give you an offensive advantage over your opponent.
However, why can’t you just put the high-floating ball away with a volley? Of course you can, and that is up to you. If you think that hitting a volley will surely put the ball away and is a safer route, then go for it. Though, the potent upside of the swinging volley compared to the regular punch volley is that it is much easier to put the ball away due to the high pace you would be imparting on the ball since you are practically hitting a groundstroke.
Also, being able to hit a swinging volley is an indicator of good technique; it demonstrates that you are able to drive through the ball well. In fact, practicing swinging volleys is commonly used for developing groundstroke technique and power.
The swinging volley is definitely a specialty shot that should be a part of your arsenal. Being able to hit the shot will give you more confidence in your offensive game and you will find yourself being able to absolutely dominate the high balls that pushers often hit to you. Although the swinging volley is a great tool and is flashy, it should be used wisely. If you can certainly put the ball away with a volley then do that instead. If you are confident enough that you can hit the swinging volley, then by all means do it, for it is a message to your opponent that floating balls back is not the answer to winning against you.
Employ the swinging volley today and notice a notable improvement in your offensive game. Hope you found this information helpful and feel free to ask any questions regarding your game!