Yes, I use Claude — both the chat and Claude Code. Projects are great for layering context, but my concern with storing full books is that they eat up a huge chunk of the context window. I'd rather spend that budget on actual project context — the codebase, architecture decisions, domain specifics. That's where the distilled skill files come in: you get the core principles from the book in a compact, actionable form without burning through your context on hundreds of pages of text. At least that's how I see it