Have come across them in both indica, sativa (and even hybrids) every once in a while. Swazi, and Inca Spirit and C-99xSweet Tooth are a few I can remember doing this.
If grown without fimming or topping, no noticible difference in stretch, volume, taste or effects.
Would be nice if it produced 50% more bud, but seems to average the same dry-weight as other plants from the same seed stock. I does switch to alternating nodes, just like it's 'normal' siblings after the 6th or 7th internode.

Would most likely be great for SOG.

Since I know (a little) more about breeding, the next one I come across, I want to stress with aspirin to get some fem seeds. (I've used the aspirin technique quite often with great success)

Would be interested in what happens to the strain.