Perhaps you could weigh the pros and cons of pacificer use vs. not using them and decide which issues on either side create the most problem. For example:
Using pacifiers:
- potentially limits time at the breast too much, increasing chance of supply issues
- potentially alters suck patterns and interferes with breastfeeding
- potentially shortens the nursing relationship in the long run
- potentially helps you manage two babies, getting you more sleep and helping you function better
-potentially a tool to keep one baby happy at times you can't tend to both at once
Not using pacifiers:
- all sucking occurs at the breast, likely resulting in a better/more established supply, nothing to interfere with suck
- no need to keep track of paci's, no habit to break later
- in the end you may find that a paci didn't really reduce the burden as much as you'd hoped.
Overall . . . there are a number of factors to consider. How confident are you that, should bf'ing problems arise as a result, you are able to rectify them and have adequate support to do so? If they do cause problems will that end up being more work than the paci help was worth? If you choose not to use paci's or some other method to ease the night stuff do you feel that your parenting and health will suffer?
I hope I'm not coming off as having an opinion on one side or the other because I really don't have one. These are just things I bring up with moms I work with as a LLL leader to help them make an informed decision. In the end, you are the mommy and if you think that introducing a paci is necessary at this point then I say go for it - but just go for it with open eyes as to the potential drawbacks. If (when

) I am in your shoes I may opt to use them myself.
Something to ponder . . .if you introduced them now, what is the likelihood that you could stop using them in a few months when things feel more manageable? I didn't use them with Mason so I have no clue about that, but if it were possible to use them for just a short time then that might be a nice in between, dunno.
Hang in there mama

. I hope you find a solution to help you and the babies have more restful nights.