I am just faster at expressing myself on a guitar, so that’s what I do. If I were a pianist, I’d have a massive USB keyboard in front of me and do my composing straight in Renoise, using simple sine waves. It just isn’t part of the workflow at which Renoise is particularly efficient, that’s all. If the original poster was trying to compose by guessing and typing in notes, that’s probably not an efficient workflow - that’s what I was trying to point out.
I think I work similarly, just that I grab one of my kalimbas/ka r imbas/mbiras (they’re all in different keys, which is my excuse to have eight of them currently), come up with something that sounds interesting, then type in the notes in Renoise. I don’t need more than two and a half octaves usually, so this helps. Occasionally, I use also an ukulele for making noise, too (easier for chords, though I struggle with string instruments). I sometimes ponder the idea of learning (musical) keyboard or piano playing, but I don’t know. I find them so bulky and I can’t easily walk around with a keyboard or sit in a corner/etc. I’ve noticed that my musical creativity seems to be somehow linked to mobility and movement. If I sit in the same place, I find it much harder to come up with ideas, and I also can’t do it just in my head like some folks can (I need an instrument).
Reading this thread, the conclusion is pretty much that “it depends”. I get results faster in Renoise + non-keyboard acoustic instrument than I do with a piano roll based DAW (I’ve recently fallen in love with Tracktion 5, but that’s mostly for audio recording, especially because of how it handles recording multiple takes and comping), but this may be different for people who click in all notes, or who are pianists/keyboarders. Actually, I just realized that because my instruments don’t always (or usually) have strict or identical layouts, I’m not “thinking” in a piano layout at all, but in notes, by name and number. So seeing the text label C4 or G#5 in a grid is more meaningful to me than a visual representation based on a piano keyboard (yes, many piano rolls can display the text labels, too, but the notes themselves are still arranged in a linear piano layout). Additionally, kalimba/etc. tabs are vertical, too, precisely like trackers. (Looks like this.)
So anyway, I don’t think it can be generalized that method A is always faster or better than method B, or vice versa. It just depends on what you’re used to and how you work/think.