Question about bard invis and faction songs

[evelynbb]

Hi. A friend and I have started playing recently; I'm a Human Bard, he's an Iksar. We've been looking for ways to safely travel while he's still hated by everyone, and I had a question about both the bard's invisibility and faction songs, the ones obtained at levels 19 and 11 respectively.

For invis, since the song grants both invis and see invis, will we be able to see each other while under its effects? Also, are there any mobs in Highpass that have see invis and would murder us if we tried to get through to Qeynos from Commonlands?

For the faction song, am I able to buff him/others with it? I haven't been able to obtain and test it myself yet as I'm currently in Kurn's and won't be leaving for a while.

Thank you!