### Let's maximize best practice. From my perspective this means making objects out of our Article so we can handle they byline permutations:

client-article.php

<?php

	/* client-article.php */

	class ClientArticle extends TimberPost {

		function writers(){
			return $this->get_terms('writers', true, 'ClientWriter');
		}

		function writer(){
			$writers = $this->writers();
			return $writers[0];
		}
	}

client-writer.php

<?php
	class ClientWriter extends TimberTerm {

		function get_title(){
			$now = get_the_tiem('U');
			foreach($titles as $title){
				if (strtotime($title['start_date']) < $now && strtotime($title['end_date']) > $now){
					return $title;
				}
			}
		}

	}

single.php

<?php
/* single.php */
require_once('client-article.php');
require_once('client-writer.php');

	$data = Timber::get_context();
	$data['post'] = new ClientArticle();
	Timber::render('single.twig', $data);

single.twig

<div class="meta-byline source">By
    {% for writer in post.writers %}
        <a href="{{writer.link}}" class="writer-name">{{writer.name}}</a>
    {% endfor %}
    {% if post.writers|length == 1 %}
        <span class="writer-title">{{post.writer.title}}</span>
    {% else %}
        <span class="writer-title">Staff Writer</span>
    {% endif %}
</div>

xsingle-naked-php.php

<?php

/* I'm being as efficent as possible -- I'm assuming that this would reference PHP files as well that don't extend Timber */
<div class="meta-byline source">By
    <?php foreach($post->writers() as $writer){ ?>
        <a href="<?= $writer->link(); ?>" class="writer-name"><?= esc_attr($writer->name()); ?></a>
    <?php } ?>
    <?php if (count($post->writers()) == 1): ?>
        <span class="writer-title"><?= esc_attr($post->writer()->title); ?></span>
    <?php else: ?>
        <span class="writer-title">Staff Writer</span>
    <?php endif; ?>
</div>