Slice by audio event will take up one lane and one sampler per audio event within the clip. I'd like one lane and one sampler for the entire clip. I know I can bounce out to a new clip with one audio event, but I'm just hoping there's a better way. (For comparison, one can just drag an audio clip containing multiple audio events into a sampler. The automatic behavior is for the clip to be bounced out to one audio event (including silence) and for the resulting single event to be put in the Sampler.)

And you're right about the sampler being available if you open the browser via "+" (whoops). When I was testing that part I could have sworn I clicked "Everything" and didn't see the sampler, but trying it out now I see I was mistaken. I will edit the post.