It wouldn't be taken as offense, either, though Levi still isn't entirely comfortable with Reiner. He wonders if he ever will be, but at least their level of civility seems to be approaching the sort they had at the end of the world, and now he does have clear proof that the younger man isn't waiting to get rid of him despite his last memories from home being of them as bitter enemies. Levi briefly wonders when exactly he comes from; if he knows about his former classmates blowing him up, if he knows about his comrade's fate, if he knows that they all but wiped out the Survey Corps that day.

He seems to be on their side again now, however reluctantly -- or perhaps on Ellipsa's side is a better evaluation of that -- and as much as an extra failsafe would feel nice right about now, they do also have a mission to complete.

"No, I'll slow you down." He frowns slightly, hoping it doesn't sound too dismissive; he just really does think that Reiner seems to be too damn effective in this environment to get tangled up babysitting a hamstrung man who can't swim. "There's probably others that could use your aid."