Of course the signal follower has lookahead. With none, it seems to lag a bit, around 15ms or so it seems more spot on, longer lookahead will make the ducking be anticipatory, which currently seems to be a popular effect doint so with kick/pads in very exaggerated manner.
What I meant with the bass and slow response is, you will have difficulties to get the sidechain be very snappy, especially when using the filtering options to catch the kick in a busy track. With low bass notes/frequencies it can be a problem with the signal follower reacting to the oscillations when using very direct attack/decay settings. Also the nature of (filtered) bass frequencies can be that they slide in rather than hit strong, so you won't be able to get sharp attacks to a certain degree.
My current solution is to layer a dc sample (yes, just outputting +1, no oscillations) onto the instruments having the kick or snare action I want the ducking to react to. Then I shape the dc with an sample envelope to how I want the sidechain to work, and route it to a special track with the signal follower->hydra set up. The hydra will trigger a hydra in each important group, which itself will then control the gainers etc doing the sidechain work. The dc track will output no audio (dc is bad for speakers, you better enable the dc filter on master until you're sure it is properly muted!) but only work out the sidechain. Ofc you can also use a dummy kick sample or so, but I find using a dc sample gives the most precision and enables to use lowest attack/release times on the signal follower, making it operate as snappy as ever possible.