Just need more people to try it out and share thier results. My plantings are all 2.5 years or younger so a few more years before I can contribute much but so far
Guava- year round fruiting if you prune back fruiting laterals to the cordon when you pick fruit.
Mulberry- dwarf black and red shathoot seem to work well, white shathoot too vigorous
Acerola- filled out the frame quickly, flowers like crazy, not setting yet
Wax jambu- seems overly vigorous, no fruit yet
Rollinia- vigorous but 2 year old seedling has set fruit this year on its own. (90cm at planting, 2m tall now).
Soursop- grafted, flowering heavily at 2 years, will try to pollenate them next year
Canistel- grafted, flowering heavily at 2 years, easy to train to espalier
Black sapote- seems like it will work, is always flowering but hoping it won't be to vigorous once established.
Low chill stonefruit- multigrafted tree, a little vigorous, sunraycer and nectarcot need to thin fruit, angel peach (ufo) seems to have poor fruit set, just added florida prince, sunset peach and sunset nectarine for the final cordons.
Carambola- probably the perfect espalier tree. I cut out the top and grafted giant sam, so it will be a sam and kari.
Failures
Jaboticaba- informal palmette would be the go, and I think would allow for easy fruit harvest and protection. I plan on an informal palmette row for any new jabs since we have a crow problem. Punch yourself in the crotch if you are considering anything formal with a jaboticaba.
Low chill apple- to hot here, never knows when to leaf out or flower. Underplanted some garcinias.
Time will tell with the rest.