We have on and it works well.
A couple things to consider. Yes, it does require a higher deductible and out of pocket maximums than a non-HSA plan but in our case, the savings over what we would be required to pay for the non-HSA plan (which we add to the HSA), plus what the employer matches, makes it worth it for us. We've had it for two years now and neither year have we used all of what was in the HSA, even though we have had surgeries, major dental work, etc.. It is also important to use providers that participate with the plan.
Each person/family is going to be different, but in my opinion, HSA's are well worth serious consideration.
With my company, between what they contribute and lower paycheck deductions, when I do that math, WORST case, it cost me $400.