Yes, that's a somewhat different use case. I wouldn't write a proposal in InDesign, I'd use Word because I have to collaborate with colleagues etc, but for the artwork etc. I'd use something appropriate. OK, fat lie, sometimes if I'm feeling snazzy, I'll dump the lot into InDesign and make it look uber-cool. Then, I'll go grow my beard and hang out in Dalston for a bit. Maybe eat some street food and drink a nitro cold brew coffee.