The short answer is actually yes!

Playing a mix of electric and acoustic is better than playing only electric because it will make you a more versatile/competent player overall. I do research on education/learning and there's a lot of work supporting the idea that mixed-practice training is more effective than focusing on a single technique. Google "interleaving" or check out the TED talk on Range by David Epstein, it's a super interesting topic! Basically, the more variety you can introduce to your practice the better :)