I have a known ice installation on my B-55 Baron, and it works great. A twin
has the built-in redundancy of two electrical systems, and the other
requirements include a high heat pitot and stall warning vane, along with an
ice light. There are two pumps each for the windshield as well as the flying
surfaces.

It definitely increases the dispatch rate in the icing season, which in the
Midwest is from October through May (or longer). Several months ago I
encountered moderate ice over Michigan, and the commuters as well as other
GA aircraft were all calling looking for different altitudes. Luckily I was
able to descend out of the clouds, and the TKS completely protected all of
the flying surfaces. On landing, the nose, spinners, and even the landing
lights were covered with around 3/8ths inch of mixed ice, but the wings and
tail were fine.

I believe that most users would agree that TKS is superior to boots, hot
props, and alcohol for ice protection.

The downsides a the initial installation is expensive, but should last a
lifetime. It does not require routine maintenance and doesn't slow you down
like boots, and won't need replacement. A full tank takes away nearly 100
pounds of useful load, and the stuff is expensive. I recall a 55 gallon drum
costing around $450.00. I never take off in the winter unless the tank is
full, and also carry several extra jugs around for longer trips. I also
collect the overflow and use it in a garden sprayer or spray bottle to deice
the plane if I think I will encounter icing conditions shortly after take
off

It also makes a terrible slippery slimy mess on the hangar floor which lasts
forever. It will drip for several weeks after use, and this means doing a
pre-flight invariably will either get your back dripped on, or you will
kneel in the stuff on the floor or slip.

However, all things considered, it is the only way to go to get ice
protection in the winter. It is not a ticket to drone on for hours in
freezing precip, but it will get you through or away from an icing layer
safely. It has been a great investment and has certainly increased the
usefulness of he plane.