sure. often the trick to making good use of parameter slides is using them with lock trigs (also called trigless trigs, i think?), i.e., press [func]+ a trig which turns it from red to yellow.
my favorite use of slides is on the pitch of basslines or leads, but to get them to sound natural you often need lock trigs which do not re-trigger the filter envelope. As an example: we are programming a bassline using a bass patch made with the SY RAW engine and a typical LPF that opens instantly and closes according to a moderately long decay. After triggering a long note activated for “parameter slide” (i.e., red trig whose pitch is set according to [NOT] and something arbitrarily high for [LEN], both parameters on the trig page), put a lock trig on the succeeding sequencer step with the [TUN] parameter locked to a different value than the preceding red trig and the [ENV] parameter set to 0 (so that the filter envelope does not retrigger). This technique sort of emulates sliding between notes on a fretless bass. In fact, for practice maybe try programming a known bassline that is originally played on a fretless bass, e.g., one of these. Note that parameter slides don’t work for any locks on the trig page, so you cant do this with the [NOT] parameter, you have to lock the [TUN] parameter on the synth page or sample page. However, using lock trigs locking the [NOT] parameter does accomplish something similar to “pull-offs” or “hammer-ons” on a fretted instrument, so its still pretty useful.
another subtle use of parameter slides is automating the volume of a triggered sound to get a “side-chain compression” effect. more specifically, you have a long note or sample playing on a triggered track and while the sound of that track is audible you set a lock trig (which is activated for parameter slides) with the [VOL] on the amp page locked to zero, then a succeeding lock trig with [VOL] on the amp page set to the original value of [VOL] that the sample with triggered to. What should happen is that the volume immediately drops down to zero and then ramps back up to the original volume. I often use this on synth pads and drop their volume on steps that correspond to the kick and snare.
generally i use slides to smoothly automate the volume of tracks, delay, and reverb.