jQuery Grid Plugin - jqGrid

I have looked into jqgrid and it seems fantastic, however before I switch to it I need to know a few things.  Need to know if it supports the following with treegrid:

• Does it support node sorting (moving) by drag & drop within the tree?
• If I drag a parent to a new location in the tree, does it drag all its children as well, as well as coresponding rows for each node?
• Can I have custom icons using Themeroller (jquery ui icons), one for folders and others for different file types?
• Can I allow drop inside certain nodes (like folders) otherwise it will drop before or after hovered node?
• I use json data from the server, however it is sorted into a tree locally (saves server workload), can I subject data to a local sort before import?
• Can I have HTML formatting in each node text (ie bold, spans with spacing, etc.)?

Thanks

J