Most feather beds rarely shed, you'll only see a feather or two a week.
Feather beds are better because they are organic, therefore are less likely to cause allergies. Additionally feather beds are more comfortable and have the option to be adjusted in case of getting worn down.
You don't need professional cleaning for most feather beds, but it helps if you can afford it.
Some feather beds are portable but transporting them may not be all that practical since they're not like sleeping bags or cots.
There are some hypoalergenic ties, but they are rare and fairly pricey.
Feather beds have come along way now with stitching that keeps the down in place. The down does not hurt when you roll it up as it doesn't poke through as much as the feather and down mix, or nearly as much as the older feather beds.
You can buy zipper, or velcro covers for feather beads for extra softness.
You can buy feather beds at most well known dept. stores such as Sears, Macys, ect. You can also buy them on Amazon.com. Yes, you can buy cushion feather beds.
Most feather beds are very comfortable and will certainly increase your comfort.
Any featherbed will work well in colder climates.
Yes you should fluff and shake the feather bed often to make sure that you keep it in the best shape as possible.
Feather beds are a great idea, but make sure they don't already have one, first.