Tandem Cycling - Getting ready for a tour

I was going to change the tubes in my tires. They are one year old. I took the old tube out and it was a slime tube. The tires are Armadilos. Is armadilos + slime tubes overkill? I was going to just put in new regular tubes because the old ones are a year old.
Thanks!

I don't have any experience with slime in low pressure tubes but I have not heard of anyone having luck with them in high pressure tubes. Not only do they not plug the hole but it leaves a mess making standard patching hard. I say, get rid of the slime tubes.

That was what I thought. It is overkill.

Why get rid of one year old tubes if they properly hold air?
Tried slime once; never again. Yes it'll seal small punctures, but oh, what a mess if you need to replace the tube! Goopy stuff all over the inside of the tire.
If touring, just throw a second spare tube in your bag + patchkit.

NO, it is not overkill. I run slime tubes all the time, in racing and touring tires: they add little weight and work well.

Never used slime tubes- never need to and don't want to. You spend a fortune on reducing weight on the bike and then add extra weight where it can do most damage- At the extremity of your wheels. Then on top of that- From various reports that I have had unfolded to me- It does not always work.

It depends on what kinds of flats you're likely to get. If you have a lot of goatheads in your area I think slime may help. If it's glass, I don't think slime is going to help much.

I've never used slime, and I've lived in areas where either goatheads or glass were the primary threats. Amradillos do a good job. If you know you went through some quesionable areas after a ride, just spin the tires slowly in the sunlight and look for pits from thorns or sparkles from glass, and get them out of your tire. A lot of those things can sit in an Armadillo for weeks before actually causing flats.