Just checked the Holidays mod. Looks like they wont conflict as they made their own alternative versions of them.
However, if you wanted you could also incorporate their meshes into the swaps. I've compiled a list of their meshes which, with some _SWAP.ini tweaks, you can alter as you see fit. My provided _SWAP.ini should give you a general idea how it works, if you aren't aware already, but I would also suggest checking the Base Object Swapper page for more information. It provides a lot more details on how to arrange the swaps.
These are the EditorID's for the rope lines in Holidays
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However, if you wanted you could also incorporate their meshes into the swaps.
I've compiled a list of their meshes which, with some _SWAP.ini tweaks, you can alter as you see fit.
My provided _SWAP.ini should give you a general idea how it works, if you aren't aware already, but I would also suggest checking the Base Object Swapper page for more information. It provides a lot more details on how to arrange the swaps.
These are the EditorID's for the rope lines in Holidays
_WetHolidayRopeLine_Solitude
_WetHolidayRopeLine_Whiterun
_WetHolidayRopeLine_Dawnstar
_WetHolidayRopeLine_Falkreath
_WetHolidayRopeLine_Markarth
_WetHolidayRopeLine_Morthal
_WetHolidayRopeLine_Riften
_WetHolidayRopeLine_Saturalia
_WetHolidayRopeLine_TalesTallows
_WetHolidayRopeLine_Windhelm
_WetHolidayRopeLine_Dunmer
_WetHolidayRopeLine_Hearts
_WetHolidayRopeLine_CWStormcloak
_WetHolidayRopeLine_CWImperial
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