I have sailed a junk rigged cat
ketch for the last 16 years. Until recently my daughter had a Freedom 40 cat
ketch that we sailed up and down the US
east coast. Before that I owned a
cutter and a sloop, and have sailed and delivered many others. The reality is, the strength, and weakness, of the free standing cat rig is that there are fewer things to do to adjust sail shape. On the other hand they are so handy to sail that we regularly sail in and out of places that others, who have to deal with headsails, are intimidated by.
For a long time I missed having more to tweak, so I installed a retractable
bowsprit so I could fly a jib, and running backs, and a
spinnaker pole, etc. But I'm coming around to just enjoying the rig as it is. The cat rig is a low stress, low complication, low cost rig. It's pretty ideal for for low effort cruising. It offers some real benefits, but as always, there are tradeoffs.