I recently installed one of EMWC softeners and guess what, it softens the water. The other half decided that she liked the fluoride in the water we receive so we have a separate tap for the original water too.
I have not yet reaped the benefits of a water softener over a long period of time, and I drink the soft water, which admittedly tastes a lot different.
However: yes, EMWC, i don't beleive are a water company. They sell products. If you are looking for a water softener, they are much of a muchness, just chose someone either convenient or who you prefer personally.
There seem to be 2 types of people on here. Those that have and recommend softeners, and those that don't and don't recommend them. This seems to be personal preference. However I would go careful with statements from either side. Especially ones like 'leaving water in the fridge will remove chlorine', they are both idiotic, scientifically impossible and don't help the debate / answering here.
I would suggest that if you are unsure about having a water softener, try and find someone (family or friend) that does, and ask (if they will let you) to shower there or drink the water there or even just look at appliances there.
You will notice shiny clean appliance, such as kettles etc if they are using softened water in them.
You will also notice that the water tastes different, I have not yet worked out whether I like it or not.
In either case, I would have the separate tap fitted either; a). That is direct form the mains and doesn't run through the softener or b). Has a carbon filter attached that removes the majority of impurities and one would have thought, would taste slightly better.
Ultimately, if you feel you need one, go for it, it will save pipes, improve time taken to heat water (if only marginally) and reduce costs with cleaning products. If not, the money you save buying the softener can go towards new pipes, cleaning products etc etc in the long run.