From what i can tell, from personal experience, there really ins't too big of a difference between tactile and linear keys when it comes to gaming.
For light keys, you may accidentally trigger certain key press if you are not careful, but that's the general nature of light keys.
a few things to note though.
1. I found heavier keys (cherry black for example) may cause more fatigue on long sessions compare to lighting switches.
2. The noise, if you are on VOIP programs often, then I would advise you to stay away from loud clicking switches, (ex. cherry blues).
Especially when you have a desk mounted microphone instead of head set.